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Enhanced electrocatalytic activity of plasma functionalized multiwalled carbon nanotube-entrapped poly(3,4-ethylendioxythiophene): poly(styrene sulfonate) photocathode
- Issue Date
- 10-Nov-2014
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- dye-sensitized solar cell; electrocatalytic activity; oxygen plasma-functionalized carbon nanotubes; PEDOT:PSS photocathode; photoelectrochemical cell
- Citation
- ELECTROCHIMICA ACTA, v.146, pp.68 - 72
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 146
- Start Page
- 68
- End Page
- 72
- ISSN
- 0013-4686
- Abstract
- A composite of poly(3,4-ethylendioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and multi-walled carbon nanotubes (MWNTs) was electrochemically polymerized on a fluorine-doped tin oxide (FM) substrate and used as a photocathode for a dye-sensitized solar cell. The MWNTs were previously O-2 plasma treated and simultaneously entrapped while the PEDOT:PSS film was electropolymerized. The resulting plasma-functionalized MWNT-entrapped PEDOT:PSS composite showed enhanced electrocatalytic activity for the reduction of I-3 to I, this was confirmed by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and incident photon-to-current conversion efficiency (IPCE) measurements. An improved energy conversion efficiency by about 13.9% was observed in optimized conditions as compared to a platinized FTO-based photocathode. (C) 2014 Elsevier Ltd. All rights reserved.
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Related Researcher
- Ahn, Dong June
- College of Engineering (Department of Chemical and Biological Engineering)